Elisabeth Moss has suggested that people all over the world can relate to Mad Men.

Speaking to The Hollywood Reporter, Moss's co-star Jon Hamm explained that the fact that the show has been sold to over 120 countries is "a tremendous validation".

"We are very excited that people are responding to what is after all a very specific show about a very particular part of American history and a particular part of New York City," he continued. "The fact that it resonates in Scandinavia and Germany and England and Australia and New Zealand and is working there is very gratifying."

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Moss added: "There's a very universal element to it. The things the characters are going through, the people that they are, their secrets and problems and relationships are all universal no matter what decade it is and what country it is.

"I think that's ultimately what has carried the show for four seasons. People [are] not only responding to the look and setting and feel, but also learning to identify with a set of people."

Meanwhile, Hamm suggested that the series is different because the characters have such depth.

"What I think our show has - which is not necessarily new, but is a little bit out of the box - is very well-drawn characters that people engage with and want to see what happens next," he said. "They are human if you are living in Sri Lanka, in Asia, or Denmark or the south of France."

Mad Men continues on Sundays at 10/9c on AMC in the US and on Wednesdays at 10pm on BBC Four in the UK.